How to reproduce:
1. Open the attached “UnitTestFailure” project
2. Select “Window“ → “General” → “Test Runner” in the main menu bar
3. Select “TestsSuite” (expand “UnitTestFailure” and “Tests.dll” in case they are collapsed)
Expected result: Tests load successfully with no errors
Actual result: Trying to load the tests raises a System.ArgumentNullException exception
Reproducible with: 1.1.33 (2020.3.39f1, 2021.3.10f1, 2022.1.16f1, 2022.2.0b9, 2023.1.0a12)
Reproducible on: Windows 10